"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : WDR
Case Name   : 开启数据库监控快照功能，不同库中查看快照数据
Create At   : 2023.1.5
Owner       : opentestcase009
Description :
    1、修改参数，开启快照功能
    2、使用默认系统库，查看当前快照数据
    3、使用非默认系统库，查看当前快照数据
    4、清理环境，恢复参数
Expect      :
    1、开启快照功能成功
    2、查看快照数据成功
    3、查看快照数据失败，非系统库不可查看
    4、清理环境成功，恢复参数成功
History     :
    modified by opentestcase009 at 2023/1/31:优化用例
"""

import os
import unittest

from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger


class WDR(unittest.TestCase):

    def setUp(self):
        self.log = Logger()
        self.sh_pri = CommonSH('PrimaryDbUser')
        self.constant = Constant()
        self.config_wdr = "enable_wdr_snapshot"
        self.table = "snapshot.snapshot"

    def test_wdr(self):
        self.log.info(f'-----{os.path.basename(__file__)} start-----')
        text = '-----step1:检查参数，修改参数配置;expect:成功-----'
        self.log.info(text)

        check_res = self.sh_pri.execut_db_sql(f'''show {self.config_wdr};''')
        self.log.info(check_res)
        if 'on' != check_res.splitlines()[-2].strip():
            self.sh_pri.execute_gsguc('reload',
                                      self.constant.GSGUC_SUCCESS_MSG,
                                      f'''{self.config_wdr} = "on"''')

        param = self.sh_pri.execut_db_sql(f'''show {self.config_wdr};''')
        self.log.info(param)
        self.assertEqual('on', param.splitlines()[-2].strip(),
                         '执行失败' + text)

        text = '-----step2:使用系统默认库postgres查看快照数据;expect:查看快照数据成功-----'
        self.log.info(text)

        select_cmd = f'''select * from {self.table};'''
        show_res1 = self.sh_pri.execut_db_sql(select_cmd, dbname='postgres')
        self.log.info(show_res1)
        self.assertEqual('snapshot_id',
                         show_res1.splitlines()[0].split('|')[0].strip(),
                         '执行失败:' + text)

        text = '-----step3:使用非系统默认库查看快照数据;expect:查看快照数据失败-----'
        self.log.info(text)

        show_res2 = self.sh_pri.execut_db_sql(select_cmd)
        self.log.info(show_res2)
        self.assertIn('ERROR', show_res2, '执行失败:' + text)

    def tearDown(self):
        text = '-----step3:清理环境,还原参数;expect:成功-----'
        self.log.info(text)

        drop_snapshot = f'''truncate table {self.table};
            select count(*) from {self.table};'''
        self.log.info(drop_snapshot)
        drop_res = self.sh_pri.execut_db_sql(drop_snapshot, dbname='postgres')
        self.log.info(drop_res)

        recov_res = self.sh_pri.execut_db_sql(f'''show {self.config_wdr};''')
        self.log.info(recov_res)
        if 'off' != recov_res.splitlines()[-2].strip():
            self.sh_pri.execute_gsguc('reload',
                                      self.constant.GSGUC_SUCCESS_MSG,
                                      f'''{self.config_wdr} = "off"''')

        param = self.sh_pri.execut_db_sql(f'''show {self.config_wdr};''')
        self.log.info(param)

        self.assertEqual('off', param.splitlines()[-2].strip(), '参数修改成功')
        self.assertEqual('0', drop_res.splitlines()[-2].strip(),
                         '执行失败:' + text)
        self.log.info(f'----{os.path.basename(__file__)} end-----')
